Home / 20,784.74-31,173.39-6,744.20

Finding the Fourth Proportional to 20,784.74, 31,173.39 and 6,744.20

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Solution

The fourth proportional to 20,784.74, 31,173.39 and 6,744.20 is: 10,115.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.74 : 31,173.39 = 6,744.20 : x
  2. Step 2: Convert to fraction form
    20,784.74/31,173.39 = 6,744.20/x
  3. Step 3: Cross multiply
    20,784.74x = 31,173.39 × 6,744.20
  4. Step 4: Simplify right side
    20,784.74x = 210,239,420.97
  5. Step 5: Solve for x
    x = 210,239,420.97/20,784.74
  6. Step 6: Final answer
    x = 10,115.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.